{"id":"db466d7c-2218-4373-8828-73719a2e3845","shortId":"3haZM3","kind":"x402","title":"x402-gated product inventory endpoint on Base, paid per-request in USDC.","tagline":"x402-gated product inventory endpoint on Base, paid per-request in USDC.","description":"This endpoint at lowpaymentfee.com provides access to a product inventory resource (product ID 2) behind an x402 paywall. It is part of a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all settled on the Base network using USDC.\n\nThe specific endpoint `/api/v1/products/2/inventory` is listed as \"Premium API Access\" and accepts HTTP POST requests. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0x8335… on Base), which equals $0.02 per request (USDC uses 6 decimals). The platform advertises no API keys, no rate limits, and instant access — payment is handled entirely via the x402 protocol's X-PAYMENT header.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what the inventory data actually contains. The endpoint is confirmed live (returns 402 with a valid x402 challenge), but without documentation it is unclear what request body is expected or what shape the response takes.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","product-inventory","pay-per-request","no-api-key"],"categories":["commerce","data"],"synonyms":["product inventory API","x402 inventory endpoint","pay-per-call API","USDC micropayment API","lowpaymentfee","Base network API","crypto-paid API"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","No OpenAPI or request/response schema provided; request body format and response shape are unknown.","The endpoint name 'Premium API Access' is generic and does not describe what data is returned.","The broader platform lists many endpoints but none appear to have public documentation."],"endpointUrl":"https://lowpaymentfee.com/api/v1/products/2/inventory","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/products/2/inventory","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live with a valid x402 challenge and clear pricing ($0.02/request in USDC on Base). However, there is no documentation, no OpenAPI schema, no request/response examples, and the docs pages are empty. The purpose of this specific endpoint ('Premium API Access' for product 2 inventory) is vague and undocumented.","verified":false,"liveness":"unknown","lastLivenessCheck":null,"agentReviews":{"count":0,"score_avg":null,"cost_usd_avg":null,"success_rate":null,"latency_p50_ms":null,"narrative_summary":null,"summary_updated_at":null},"enrichmentModel":"anthropic/claude-opus-4.6","enrichmentVersion":2,"enrichedAt":"2026-04-18T22:36:16.495Z","embedding":[-0.009635925,-0.0008239746,0.020935059,0.014930725,0.011680603,-0.038024902,0.007774353,0.040496826,0.061676025,-0.08203125,0.05142212,-0.052886963,-0.044403076,-0.045715332,-0.01474762,0.0138168335,-0.015701294,0.019622803,-0.08856201,0.022094727,0.019302368,-0.018737793,-0.023529053,0.03652954,-0.022735596,-0.0072288513,-0.016143799,-0.0019102097,-0.023803711,-0.03314209,0.026611328,-0.024551392,-0.017089844,0.011932373,-0.0012044907,0.022613525,0.028320312,0.050201416,0.05050659,-0.01474762,-0.012527466,-0.050079346,-0.010398865,-0.013557434,-0.03491211,-0.009239197,-0.0072898865,-0.029251099,-0.015991211,-0.027923584,-0.009971619,0.0047683716,-0.009048462,0.008270264,0.0032138824,0.020217896,-0.0038890839,0.0095825195,-0.013008118,0.026000977,0.026779175,-0.079833984,0.0053100586,-0.0037517548,0.00051641464,0.05090332,-0.01537323,0.05557251,-0.0021877289,0.04537964,0.01651001,0.044525146,-0.0012550354,0.023422241,-0.014533997,0.0039978027,-0.024139404,0.02986145,-0.011222839,-0.016296387,-0.024337769,0.0010204315,-0.042114258,-0.016601562,-0.024658203,-0.061187744,0.0012931824,0.016998291,-0.029830933,0.016571045,-0.09454346,0.011634827,0.0038204193,0.008178711,-0.029388428,-0.03955078,-0.0046157837,0.014091492,-0.012626648,0.03237915,0.0060043335,-0.00042319298,0.018829346,0.0012235641,0.045898438,0.01902771,0.018096924,0.021469116,-0.007904053,-0.04876709,-0.011489868,-0.016540527,0.0034637451,0.012168884,-0.00046873093,-0.007701874,-0.030334473,0.020599365,-0.0024814606,0.04321289,-0.039276123,0.068359375,0.008605957,-0.018417358,0.017166138,-0.029907227,-0.033569336,0.012687683,-0.030670166,-0.014587402,0.038360596,0.005329132,0.0038547516,-0.045928955,-0.035247803,0.025878906,-0.017990112,-0.019210815,-0.052001953,0.0070991516,0.016952515,-0.036499023,0.03213501,0.014953613,-0.10681152,-0.022705078,-0.01626587,0.0037002563,-0.022842407,-0.012428284,0.020950317,0.020446777,0.0009841919,-0.039520264,0.011558533,-0.030960083,-0.022567749,0.055786133,0.0048942566,0.0184021,-0.009185791,0.019241333,0.030014038,-0.008979797,0.019439697,0.028778076,-0.016296387,-0.08654785,-0.06536865,-0.017623901,0.012626648,0.016921997,-0.017242432,-0.00409317,-0.0042533875,-0.052856445,-0.031066895,0.008224487,-0.025146484,-0.04937744,-0.01374054,-0.05078125,-0.007293701,-0.033416748,-0.04660034,-0.014205933,-0.036102295,0.03805542,0.016174316,0.008522034,0.01927185,0.008743286,0.044036865,0.030517578,0.0048332214,-0.046905518,0.007045746,-0.028549194,0.060760498,-0.003917694,0.039154053,-0.030517578,0.046783447,0.06512451,-0.0042915344,-0.030181885,-0.0018072128,-0.017288208,-0.046966553,-0.012489319,0.0061836243,0.007144928,-0.001996994,0.031921387,-0.021957397,-0.024658203,0.018463135,0.039978027,0.008956909,0.078125,-0.002714157,0.0050468445,0.006626129,0.0047187805,-0.030090332,0.0569458,0.017669678,0.02557373,0.018539429,-0.049102783,-0.00053596497,0.013801575,-0.013336182,-0.027954102,-0.020233154,0.033599854,-0.015609741,-0.0018777847,0.00932312,-0.021102905,-0.0137786865,-0.057769775,-0.0084991455,0.007858276,0.021621704,-0.026046753,-0.05053711,-0.083618164,0.04864502,0.049713135,0.013038635,0.0024280548,0.012001038,-0.021102905,-0.0053367615,-0.07757568,0.014381409,0.053253174,-0.032836914,-0.01675415,0.01777649,-0.009033203,-0.032470703,-0.016067505,-0.023956299,0.0011940002,0.022781372,0.013328552,-0.05291748,-0.010185242,0.023544312,0.006164551,0.054260254,-0.02357483,-0.06304932,-0.02041626,-0.015914917,0.015151978,-0.03363037,0.012718201,-0.020233154,0.019958496,0.015945435,0.011169434,0.02949524,0.017578125,0.019180298,0.020629883,-0.01524353,-0.0038375854,-0.000101327896,0.023345947,0.009460449,-0.059783936,0.030929565,-0.013694763,0.060821533,-0.04156494,0.0446167,-0.014892578,0.025131226,0.05505371,-0.013092041,-0.05709839,-0.021087646,0.028549194,0.03729248,0.041290283,-0.00082683563,-0.0041275024,-0.018981934,0.058563232,-0.015312195,0.0020179749,0.008934021,0.031707764,0.024398804,-0.015022278,-0.06451416,-0.033477783,0.00308609,-0.042663574,0.044769287,-0.014839172,0.024429321,-0.04055786,-0.005962372,-0.02494812,0.008888245,-0.037902832,-0.031677246,0.0019989014,0.0023078918,-0.011177063,-0.007926941,0.0059928894,0.040924072,-0.020339966,0.008956909,0.012512207,0.03579712,-0.010856628,-0.03616333,-0.028152466,-0.001247406,-0.017807007,-0.00945282,0.04095459,0.0069999695,0.02029419,-0.036376953,0.011177063,0.02508545,-0.0074539185,0.02418518,-0.008293152,-0.0011787415,-0.044006348,-0.051818848,-0.02558899,-0.056793213,0.034820557,0.037322998,0.022033691,0.027496338,-0.043792725,0.019546509,-0.04522705,0.02897644,-0.038879395,0.022506714,0.03753662,-0.026321411,-0.06536865,-0.0073394775,0.009727478,0.015136719,0.03781128,0.011894226,0.023132324,0.08648682,0.041107178,0.013336182,0.018707275,0.03463745,0.01398468,-0.020874023,0.012527466,-0.049713135,-0.022094727,0.023391724,-0.018356323,-0.014198303,-0.052001953,0.026351929,0.013618469,0.07385254,-0.0056915283,0.027572632,0.040039062,0.022064209,0.0018453598,-0.025863647,-0.033691406,-0.01802063,-0.030227661,0.041046143,0.009048462,0.008857727,-0.026046753,0.019714355,0.0056114197,0.022842407,-0.031173706,0.04647827,0.01586914,-0.011131287,0.021469116,0.019241333,0.06939697,0.056518555,-0.041870117,0.021438599,0.034332275,-0.03982544,-0.0054969788,0.011940002,-0.0010089874,-0.024658203,-0.051239014,-0.018417358,0.01939392,0.0038833618,-0.043273926,-0.006816864,-0.011177063,0.005683899,0.027420044,-0.012619019,-0.020019531,0.007926941,-0.0027332306,-0.055786133,-0.0028705597,-0.036895752,0.008575439,0.031921387,-0.020477295,0.004245758,0.0006623268,-0.0016441345,-0.024536133,0.006122589,-0.00092840195,-0.0036697388,-0.0054626465,-0.0014791489,0.0010147095,0.010231018,0.023757935,0.012084961,0.0569458,0.028579712,0.03717041,0.02255249,-0.0027484894,-0.040100098,0.018615723,-0.024215698,0.008071899,-0.0016994476,-0.065979004,-0.008407593,-0.03427124,-0.044433594,0.004310608,-0.0012350082,-0.0026817322,0.00042939186,0.040130615,-0.013069153,-0.011955261,-0.052581787,-0.014602661,-0.01071167,0.09039307,0.008766174,0.0046424866,-0.070129395,-0.009529114,0.023849487,0.008125305,0.006252289,-0.01499939,-0.00274086,-0.022644043,-0.010559082,-0.030014038,-0.013175964,0.043029785,0.0078048706,-0.018005371,0.028030396,-0.014877319,0.000641346,0.013137817,-0.001619339,0.02784729,0.0011072159,-0.0021686554,-0.021057129,0.040283203,-0.008422852,-0.011413574,-0.05441284,0.035949707,-0.0038337708,0.03640747,-0.03012085,0.009788513,-0.012321472,0.013908386,-0.016616821,-0.010673523,-0.0022125244,0.0037822723,-0.048736572,-0.05718994,0.031097412,-0.027389526,0.025848389,0.022247314,-0.010360718,0.05230713,-0.0005636215,0.022628784,0.020217896,-0.022277832,-0.004852295,-0.033569336,-0.026382446,-0.018936157,-0.019119263,-0.022338867,0.016967773,-0.00919342,0.02494812,-0.015533447,-0.024246216,0.047332764,0.009391785,0.023345947,0.01335144,0.0038967133,0.024536133,0.04248047,-0.0073127747,-0.06185913,0.030197144,0.002855301,-0.0017700195,-0.017120361,0.027313232,0.017578125,-0.004096985,-0.013763428,-0.010391235,-0.0093307495,-0.03967285,-0.0013713837,-0.01687622,0.038391113,0.0152282715,-0.027572632,0.028182983,0.026504517,-0.009536743,-0.029418945,0.0115737915,0.039398193,-0.02986145,0.004562378,0.023742676,0.051239014,-0.035064697,0.0008087158,0.010871887,0.025375366,0.027740479,0.005126953,-0.007835388,0.0068740845,-0.0006117821,0.0007610321,-0.0019512177,-0.011169434,0.013420105,-0.006893158,0.008918762,0.0113220215,0.00007325411,0.0069084167,-0.029891968,0.005996704,-0.018371582,-0.008476257,0.03894043,0.03262329,0.0062828064,-0.003358841,0.00283432,0.030914307,-0.021514893,-0.0021324158,-0.026382446,0.035125732,0.00047397614,0.007183075,0.0077400208,0.0053596497,0.041290283,-0.04989624,-0.005809784,0.010307312,0.010665894,-0.0022506714,-0.03805542,-0.03491211,-0.016189575,0.03225708,0.013961792,-0.00040555,0.031143188,0.012428284,0.010421753,0.011512756,-0.005142212,-0.013465881,-0.026123047,-0.011230469,0.0023956299,0.012748718,-0.0041923523,-0.0309906,0.024017334,-0.032928467,-0.012672424,0.021209717,-0.045776367,0.005870819,0.007583618,-0.006603241,0.023452759,-0.001329422,0.02180481,-0.0054473877,-0.03668213,-0.0113220215,0.015350342,0.022003174,-0.03466797,0.017028809,0.02331543,-0.013504028,-0.0206604,0.012123108,0.02571106,0.026565552,0.015930176,0.033416748,-0.024032593,0.017532349,-0.026641846,-0.0099487305,-0.00969696,-0.024810791,-0.008674622,-0.014678955,-0.026535034,0.042877197,-0.011001587,0.0038108826,-0.0129852295,-0.020126343,-0.024520874,-0.060668945,0.025970459,0.029907227,0.036895752,-0.018463135,-0.0029029846,0.005241394,-0.010658264,-0.017059326,-0.02293396,-0.034301758,0.04309082,-0.00034236908,0.0058898926,-0.025009155,-0.029418945,-0.022598267,0.012992859,-0.03451538,-0.042114258,-0.005428314,0.013710022,-0.014801025,0.0044021606,-0.0055999756,-0.016937256,0.01625061,-0.029937744,0.0013990402,0.0069274902,0.011772156,0.025939941,-0.022918701,-0.003440857,0.032043457,-0.018585205,0.041412354,-0.0071258545,0.012611389,-0.05026245,0.00094366074,0.044067383,0.03567505,0.00040268898,-0.037719727,0.011123657,-0.031402588,-0.07159424,-0.014511108,0.013366699,0.0035266876,-0.0063591003,0.00008755922,-0.033477783,-0.0056991577,-0.039123535,0.011878967,-0.005683899,0.03543091,0.0135650635,0.0010547638,-0.009048462,0.017211914,-0.02255249,-0.038909912,0.0069274902,0.010627747,-0.023162842,0.030776978,0.068359375,-0.0049934387,-0.004573822,-0.008918762,-0.009284973,0.020904541,-0.026138306,-0.009529114,-0.00233078,0.017227173,-0.011810303,-0.018722534,-0.023361206,0.0061950684,0.064819336,0.019363403,0.020751953,-0.016143799,-0.019180298,0.011390686,0.016418457,-0.051483154,0.0076675415,-0.027496338,0.03277588,-0.035858154,0.01739502,0.017593384,0.027389526,0.011802673,-0.02305603,-0.014343262,0.019973755,0.029708862,-0.06451416,-0.030838013,-0.05831909,0.0013875961,-0.017425537,-0.026367188,-0.009742737,-0.008682251,-0.018447876,-0.07647705,0.005832672,0.05255127,0.00491333,0.019515991,-0.013175964,0.0289917,0.028518677,-0.019226074,-0.021270752,0.018463135,-0.023345947,-0.013160706,-0.031921387,0.031173706,0.008224487,-0.018478394,0.014221191,-0.011726379,0.01953125,0.0008249283,0.014656067,-0.004283905,-0.0037059784,-0.018417358,-0.0051498413,-0.0073547363,-0.018920898,0.04534912,-0.041381836,0.007358551,0.030303955,-0.0076675415,0.015274048,0.018569946,0.021240234,-0.032348633,-0.0022888184,0.029891968,0.020812988,0.03186035,-0.018859863,0.035461426,0.004547119,-0.008880615,0.0067977905,-0.033721924,-0.009140015,-0.03338623,-0.020401001,0.02027893,0.0005412102,0.010978699,-0.018096924,-0.0055770874,0.020690918,0.0032444,0.008674622,-0.015281677,-0.017532349,-0.024856567,0.018844604,-0.0013113022,-0.0032405853,-0.0004093647,0.013961792,0.040649414,0.028518677,-0.002904892,0.017547607,0.0037651062,0.035980225,-0.0037517548,0.006336212,0.0018663406,0.020553589,0.042022705,0.00079774857,0.03878784,-0.027160645,-0.0058670044,-0.01448822,-0.007472992,0.0065231323,-0.0012426376,0.023208618,0.0055618286,0.003063202,0.010520935,-0.034118652,0.014015198,-0.027862549,-0.028335571,-0.0042304993,-0.008483887,0.028839111,0.014297485,-0.01940918,-0.002691269,0.002565384,0.02432251,0.0055274963,-0.007648468,0.016693115,0.03262329,0.0129852295,-0.02154541,-0.0046844482,0.004386902,-0.0018415451,0.016784668,-0.008361816,0.013656616,0.036224365,0.0056877136,0.011169434,0.0011768341,0.021392822,-0.011642456,0.0055236816,0.013595581,0.013839722,-0.012489319,0.030807495,-0.028137207,0.0034179688,0.032073975,0.011932373,0.0025749207,-0.018341064,-0.034423828,0.03186035,0.020553589,0.00233078,0.03677368,-0.0045776367,0.04144287,-0.0287323,-0.040222168,-0.0078125,-0.019226074,-0.020050049,-0.01524353,-0.018997192,-0.013687134,0.029708862,-0.033721924,0.032470703,-0.051635742,0.007801056,0.006137848,0.0035591125,-0.008865356,-0.029129028,-0.008842468,0.025985718,-0.032165527,-0.009796143,0.0017137527,0.04711914,0.0051116943,0.01713562,0.03552246,0.020431519,0.005569458,-0.05090332,-0.012229919,-0.005695343,-0.015838623,0.02180481,-0.041290283,0.07165527,0.034851074,0.01939392,0.048980713,0.022918701,0.042938232,-0.0001835823,0.033447266,0.001124382,-0.0010910034,-0.017440796,0.01360321,-0.00233078,0.0385437,-0.021484375,0.027496338,0.0011711121,0.049957275,-0.028076172,0.016464233,0.052368164,0.025497437,-0.006134033,0.050109863,0.0038204193,-0.026733398,-0.025344849,0.010101318,0.06530762,0.0030212402,0.030014038,0.031707764,-0.011566162,-0.010978699,0.00365448,-0.028320312,-0.034606934,0.056640625,0.034423828,0.020965576,-0.0079193115,0.019363403,0.008903503,-0.028884888,-0.019180298,0.03604126,0.011856079,0.011314392,-0.016159058,-0.0066223145,-0.0135650635,0.009048462,0.0060157776,-0.0012111664,-0.006149292,0.03643799,0.019210815,0.006313324,0.03677368,0.019470215,0.026824951,-0.04269409,-0.005039215,0.002506256,0.033050537,-0.002855301,-0.020019531,0.017852783,0.017852783,0.051635742,0.03930664,-0.009963989,-0.015777588,0.01966858,-0.004600525,-0.0030899048,0.04034424,0.018478394,0.0021152496,0.046417236,0.033325195,0.018203735,-0.046783447,0.016555786,0.014526367,0.028289795,-0.026382446,-0.035339355,-0.009384155,-0.014785767,0.018463135,-0.0038280487,0.012763977,0.034942627,0.04071045,0.018295288,0.0026950836,0.0018596649,0.012138367,-0.0029010773,-0.019683838,0.006828308,-0.015335083,0.008018494,0.005378723,0.020401001,-0.001543045,0.03111267,-0.0048713684,-0.023773193,-0.002714157,0.0056495667,-0.04324341,0.007972717,0.0009965897,0.009010315,-0.03289795,0.015350342,0.015838623,0.019851685,0.026977539,0.00907135,-0.009643555,0.011161804,0.027313232,0.020370483,0.0010290146,0.01121521,-0.0068740845,-0.0037384033,0.04107666,-0.01612854,0.001159668,-0.009346008,-0.00592041,0.011550903,-0.02684021,-0.0042381287,0.01751709,0.01159668,-0.022415161,0.010139465,0.040222168,0.015258789,0.048217773,0.0005645752,-0.009239197,0.0019874573,0.038848877,0.02078247,-0.006324768,0.0007648468,0.0024738312,-0.026260376,0.040496826,0.027786255,0.0025997162,0.02557373,-0.015808105,-0.0041503906,0.011459351,-0.012252808,0.003824234,-0.021560669,-0.006362915,0.000415802,0.021011353,-0.020904541,-0.027297974,-0.0046844482,-0.03756714,-0.015602112,-0.025222778,0.0056037903,0.016784668,0.008857727,0.047729492,0.022079468,-0.01222229,0.057617188,-0.021057129,0.027496338,-0.017623901,0.0034637451,0.04574585,0.029708862,0.026550293,0.0060806274,-0.0059776306,-0.010643005,-0.0012788773,0.02748108,0.025741577,0.0011672974,-0.01374054,-0.024353027,0.025253296,-0.0069465637,0.018585205,0.025390625,-0.0022678375,0.0030403137,-0.021057129,-0.018463135,-0.020690918,0.0054740906,-0.0067977905,0.04849243,-0.008262634,0.015823364,-0.025268555,-0.005607605,0.027191162,0.0036792755,0.011154175,-0.005176544,-0.026306152,0.030838013,-0.003955841,-0.0030174255,0.00036263466,0.013725281,-0.05569458,0.009140015,0.008651733,0.023956299,-0.008850098,0.045074463,0.013114929,-0.012054443,0.0014734268,0.0418396,-0.023025513,0.023147583,-0.011444092,0.0541687,0.042755127,-0.030197144,-0.001156807,0.006790161,0.0010328293,-0.008644104,-0.0012578964,0.030914307,0.0045776367,0.019638062,0.0016651154,0.008010864,0.0026741028,0.0284729,-0.008224487,0.0019025803,-0.020477295,0.000109255314,0.031402588,0.013053894,0.006061554,-0.0053253174,0.013114929,-0.016021729,-0.01007843,0.04321289,0.007926941,-0.045806885,0.0107803345,0.003627777,0.016143799,-0.0317688,-0.014251709,0.0020637512,-0.04232788,-0.0033416748,0.02255249,0.0005245209,0.009788513,-0.02986145,-0.004058838,0.03765869,0.01411438,0.0051498413,0.016403198,0.010063171,0.0063095093,-0.03729248,0.0064048767,-0.015296936,0.009971619,0.023849487,0.016799927,0.0057640076,-0.013999939,0.0107803345,0.029281616,0.008483887,0.017349243,-0.017196655,0.04159546,-0.028579712,0.0004711151,-0.004310608,0.0113220215,-0.04043579,0.0021762848,-0.016571045,0.0395813,0.041412354,-0.023666382,-0.0101623535,0.0054016113,0.028701782,0.0040130615,0.02178955,0.0074386597,0.057617188,0.017715454,-0.030548096,-0.024383545,0.021957397,-0.021972656,-0.03237915,-0.0029659271,-0.028411865,0.0027809143,0.00036358833,0.02909851,-0.005252838,-0.016021729,-0.02142334,-0.0021686554,-0.0012922287,0.02859497,-0.011390686,0.003440857,-0.010047913,-0.00043678284,0.022567749,-0.018569946,-0.023345947,-0.018829346,-0.023986816,-0.015075684,-0.052764893,-0.0015268326,-0.0079422,0.0073394775,-0.014732361,0.00819397,-0.015136719,0.019760132,-0.009025574,-0.0013427734,0.027420044,0.029968262,0.014511108,-0.008361816,0.014526367,-0.017364502,-0.025253296,-0.025787354,-0.01235199,-0.006580353,0.024719238,-0.00894165,0.033599854,0.029525757,-0.0020046234,-0.0017929077,-0.0033626556,-0.009208679,-0.010574341,-0.0061569214,-0.026321411,0.0181427,0.007865906,0.007499695,-0.0079193115,0.030548096,-0.022720337,-0.023452759,0.010620117,0.043884277,0.015426636,0.013877869,0.015556335,0.004787445,-0.03591919,-0.0028858185,0.00010418892,0.001420021,-0.0010929108,0.004917145,-0.013763428,0.028945923,0.016143799,-0.010398865,0.004081726,0.044036865,0.015113831,0.0022258759,0.042144775,0.00957489,0.014953613,-0.023910522,-0.020629883,0.010253906,0.015113831,-0.0007095337,0.024887085,0.0011978149,0.0041046143,-0.015365601,0.01600647,0.00831604,-0.022003174,-0.03778076,-0.017807007,-0.03515625,0.022354126,0.013580322,0.005290985,-0.007007599,0.010398865,-0.010002136,-0.023590088,-0.030807495,0.019515991,0.02116394,-0.00945282,-0.024902344,0.0034694672,0.012687683,-0.017211914,-0.0002720356,-0.04824829,-0.024475098,-0.0129470825,-0.010650635,0.011604309,0.0004813671,-0.04083252,0.006389618,-0.0078048706,-0.010673523,-0.006378174,0.033081055,-0.010971069,-0.0019817352,0.029129028,0.006263733,0.0063591003,0.010971069,-0.026779175,-0.006843567,0.019760132,-0.000063836575,0.00642395,-0.004211426,0.030456543,0.008094788,-0.014144897,0.016036987,0.009628296,0.038970947,0.0031852722,0.0014419556,-0.025253296,-0.0074043274,0.0231781,-0.019882202,-0.024108887,0.0011205673,-0.0056991577,-0.014457703,0.00831604,0.016784668,0.0056877136,-0.018554688,0.017486572,-0.01864624,-0.033447266,0.014732361,0.021331787,-0.01751709,0.00894928,0.03439331,-0.000013649464,-0.011657715,0.014053345,0.005996704,-0.010047913,-0.013595581,0.002506256,-0.04333496,-0.007083893,0.0018911362,-0.0022296906,0.055114746,0.014053345,0.021316528,0.025161743,0.007144928,0.0357666,0.009185791,0.03543091,-0.00012862682,0.0008945465,0.011772156,0.01939392,-0.014709473,0.003955841,-0.023422241,-0.01374054,-0.029434204,-0.005004883,-0.0037975311,0.01158905,-0.016433716,0.006801605,-0.0023536682,0.014839172,-0.02659607,0.029434204,-0.031021118,0.0074920654,0.04324341,0.03918457,0.016555786,-0.006462097,-0.035949707,0.016571045,0.05593872,-0.03164673,-0.03744507,0.008743286,0.0154800415,0.0014953613,0.005996704,0.006965637,-0.036865234,-0.02368164,-0.0019321442,-0.0021343231,-0.01322937,0.011199951,0.027755737,0.008392334,0.0039596558,-0.0062332153,0.023086548,-0.010360718,0.0037002563,0.016693115,0.0011396408,0.022598267,0.009941101,-0.029418945,0.020889282,0.017150879,-0.030776978,0.056884766,-0.01109314,-0.0027370453,-0.008773804,0.011444092,-0.039215088,-0.009315491,-0.0070381165,-0.008766174],"createdAt":"2026-04-18T18:36:35.498Z","updatedAt":"2026-04-22T16:30:41.067Z","lastSeenAt":"2026-04-22T16:30:41.067Z","tsv":"'/api/v1/products/2/inventory':83 '0.02':114 '000':104 '0x8335':109 '2':42 '20':103 '402':192 '6':119 'Base network API' 'USDC micropayment API' 'accept':91 'access':34,89,132 'actual':184 'advertis':123 'ai/ml':65 'analyt':64 'api':61,88,125,152 'base':8,22,76,105,111 'base-network' 'behind':43 'bodi':206 'broader':52 'call':60 'challeng':97,197 'confirm':189 'connect':161 'contain':185 'content':167 'cost':101 'crypto':68 'crypto-paid API' 'data':63,183 'decim':120 'descript':178 'doc':151 'document':146,200 'dozen':55 'endpoint':6,20,30,82,187 'entir':136 'equal':113 'exampl':175 'expect':208 'extrem':148 'financ':67 'gate':3,17 'handl':135 'header':145 'http':92 'id':41 'indic':98 'infer':66 'instant':131 'inventori':5,19,38,182 'key':126 'limit':129 'list':85 'live':190 'lowpaymentfee' 'lowpaymentfee.com':32 'maximum':100 'network':77 'no-api-key' 'offer':54 'openapi':171 'page':156 'paid':9,23 'part':49 'pay':58 'pay-per-cal':57 'pay-per-call API' 'pay-per-request' 'payment':133,144 'paywal':46 'per':11,25,59,115 'per-request':10,24 'platform':53,122 'post':93 'premium':87 'price':153 'product':4,18,37,40 'product inventory API' 'product-inventory' 'prompt':163 'protocol':140 'provid':33 'rate':128 'readm':155 'render':158 'request':12,26,94,116,205 'request/response':174 'resourc':39 'respons':213 'return':191 'schema':172 'servic':71 'settl':73 'shape':211 'span':62 'spars':149 'specif':81 'substant':166 'take':214 'unclear':203 'unit':106 'usdc':14,28,79,108,117 'usdc-settlement' 'use':78,118 'util':70 'valid':195 'via':137 'wallet':162 'without':199 'x':143 'x-payment':142 'x402':2,16,45,96,139,196 'x402 inventory endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"d9c8b173-1a37-4c9e-8132-b5932a41dfde","listingId":"db466d7c-2218-4373-8828-73719a2e3845","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/products/2/inventory","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:36:35.498Z"}],"sources":[{"listingId":"db466d7c-2218-4373-8828-73719a2e3845","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/products/2/inventory","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:36:35.498Z","lastSeenAt":"2026-04-22T16:30:41.067Z"}],"details":{"listingId":"db466d7c-2218-4373-8828-73719a2e3845","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/products/2/inventory \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/products/2/inventory"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/products/2/inventory"}],"useCases":["Querying product inventory data with per-request USDC micropayments","Integrating inventory checks into agent workflows without API key management","Programmatic access to product stock or catalog information"],"bestFor":["Agents or bots that need keyless, pay-per-call inventory data","Developers experimenting with x402 protocol payments on Base","Low-volume, on-demand inventory lookups without subscription commitments"],"notFor":["High-volume inventory polling where per-request fees add up quickly","Use cases requiring detailed API documentation or guaranteed SLAs","Users without access to USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:47.395Z"},"updatedAt":"2026-04-22T16:30:41.067Z"}}